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Oliver, Cletrac, Co-op & Cockshutt Tractors Discussion Forum
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1900-1950?

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rrman61

03-23-2020 09:01:57




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What is different on a 1900 compared to a 1950 Oliver.Iím very familiar with the mfwa 1950ís.i know the engineís should both be 453ís.so whatís different? Thereís an online auction in Louisiana in June and they have one,canít tell from the picture which model.is the difference on a 1900 obvious or is it internal?




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tom upton

03-23-2020 16:51:47




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 Re: 1900-1950? in reply to rrman61, 03-23-2020 09:01:57  
Engine wise first 2 maybe 3 years (I cant recall without looking it up) 1900,s had 2 valve head, last 2 or 3 years, and all the 1950's had 4 valve heads. If you are wanting max H.P. you are better off with a 4 valve. 4 valves also had higher compression ratio. If you can get the serial number off of the engine tag that is attached to the valve cover I can look up the specs on it . I have pretty much a complete set of manuals for 2 stroke Jimmys if you need any info.

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J. Schwiebert

03-24-2020 08:22:50




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 Re: 1900-1950? in reply to tom upton, 03-23-2020 16:51:47  
The 1900 checkerboard or A series tractors had the 4-53 S series engines ( 2 valve heads. The 1800 B & C series (serial number 124 396 and up have the N series engines with the 4 valve heads.



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oliverkid

03-23-2020 14:47:16




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 Re: 1900-1950? in reply to rrman61, 03-23-2020 09:01:57  
The 1900 was never offered as a row crop for starters. Although they could have a three point.



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